import { NextResponse } from "next/server";
import { EterraClient } from "@/modules/parcel-sync/services/eterra-client";
import { getSessionCredentials } from "@/modules/parcel-sync/services/session-store";
import { prisma } from "@/core/storage/prisma";

export const runtime = "nodejs";
export const dynamic = "force-dynamic";

type Body = {
  siruta?: string;
  search?: string; // cadastral number(s), comma or newline separated
  username?: string;
  password?: string;
  workspacePk?: number; // county workspace PK — if provided, skips resolution
};

/* ------------------------------------------------------------------ */
/*  Workspace (county) lookup cache                                    */
/* ------------------------------------------------------------------ */

const globalRef = globalThis as {
  __eterraWorkspaceCache?: Map<string, number>;
};
const workspaceCache =
  globalRef.__eterraWorkspaceCache ?? new Map<string, number>();
globalRef.__eterraWorkspaceCache = workspaceCache;

/**
 * Resolve eTerra workspace ID for a given SIRUTA.
 *
 * Strategy: Query 1 feature from TERENURI_ACTIVE ArcGIS layer for this
 * SIRUTA, read the WORKSPACE_ID attribute.
 *
 * Uses `listLayer()` (not `listLayerByWhere`) so the admin field name
 * (ADMIN_UNIT_ID, SIRUTA, UAT_ID…) is auto-discovered from layer metadata.
 *
 * SIRUTA ≠ eTerra nomenPk, so nomenclature API lookups don't help.
 */
async function resolveWorkspace(
  client: EterraClient,
  siruta: string,
): Promise<number | null> {
  const cached = workspaceCache.get(siruta);
  if (cached !== undefined) return cached;

  try {
    // listLayer auto-discovers the correct admin field via buildWhere
    const features = await client.listLayer(
      {
        id: "TERENURI_ACTIVE",
        name: "TERENURI_ACTIVE",
        endpoint: "aut",
        whereTemplate: "{{adminField}}={{siruta}} AND IS_ACTIVE=1",
      },
      siruta,
      { limit: 1, outFields: "WORKSPACE_ID" },
    );

    const wsId = features?.[0]?.attributes?.WORKSPACE_ID;
    console.log(
      "[resolveWorkspace] ArcGIS WORKSPACE_ID for",
      siruta,
      "→",
      wsId,
    );
    if (wsId != null) {
      const numWs = Number(wsId);
      if (Number.isFinite(numWs)) {
        workspaceCache.set(siruta, numWs);
        // Persist to DB for future fast lookups
        persistWorkspace(siruta, numWs);
        return numWs;
      }
    }
  } catch (e) {
    console.log(
      "[resolveWorkspace] ArcGIS query failed:",
      e instanceof Error ? e.message : e,
    );
  }

  return null;
}

/** Fire-and-forget: save WORKSPACE_ID to GisUat row */
function persistWorkspace(siruta: string, workspacePk: number) {
  prisma.gisUat
    .upsert({
      where: { siruta },
      update: { workspacePk },
      create: { siruta, name: siruta, workspacePk },
    })
    .catch(() => {});
}

/* ------------------------------------------------------------------ */
/*  Helper formatters (same logic as export-bundle magic mode)         */
/* ------------------------------------------------------------------ */

// eslint-disable-next-line @typescript-eslint/no-explicit-any
function formatAddress(item?: any) {
  const address = item?.immovableAddresses?.[0]?.address ?? null;
  if (!address) return "";
  const parts: string[] = [];
  // addressDescription may contain the full text address already
  if (address.addressDescription) {
    const desc = String(address.addressDescription).trim();
    // If it looks like a complete address (has comma or street), use it directly
    if (desc.length > 3) return desc;
  }
  if (address.street) parts.push(`Str. ${address.street}`);
  if (address.buildingNo) parts.push(`Nr. ${address.buildingNo}`);
  if (address.locality?.name) parts.push(address.locality.name);
  if (address.county?.name) parts.push(`Jud. ${address.county.name}`);
  return parts.length ? parts.join(", ") : "";
}

// eslint-disable-next-line @typescript-eslint/no-explicit-any
function normalizeIntravilan(values: string[]) {
  const normalized = values
    .map((v) =>
      String(v ?? "")
        .trim()
        .toLowerCase(),
    )
    .filter(Boolean);
  const unique = new Set(normalized);
  if (!unique.size) return "";
  if (unique.size === 1)
    return unique.has("da") ? "Da" : unique.has("nu") ? "Nu" : "Mixt";
  return "Mixt";
}

// eslint-disable-next-line @typescript-eslint/no-explicit-any
function formatCategories(entries: any[]) {
  const map = new Map<string, number>();
  for (const entry of entries) {
    const key = String(entry?.categorieFolosinta ?? "").trim();
    if (!key) continue;
    const area = Number(entry?.suprafata ?? 0);
    map.set(key, (map.get(key) ?? 0) + (Number.isFinite(area) ? area : 0));
  }
  return Array.from(map.entries())
    .map(([k, a]) => `${k}:${a.toFixed(2).replace(/\.00$/, "")}`)
    .join("; ");
}

/* ------------------------------------------------------------------ */
/*  Route handler                                                      */
/* ------------------------------------------------------------------ */

export type ParcelDetail = {
  nrCad: string;
  nrCF: string;
  nrCFVechi: string;
  nrTopo: string;
  intravilan: string;
  categorieFolosinta: string;
  adresa: string;
  proprietari: string;
  proprietariActuali: string;
  proprietariVechi: string;
  suprafata: number | null;
  solicitant: string;
  immovablePk: string;
};

/**
 * POST /api/eterra/search
 *
 * Search eTerra by cadastral number using the application API
 * (same as the eTerra web UI). Returns full parcel details:
 * nr. cadastral, CF, topo, intravilan, categorii folosință,
 * adresă, proprietari.
 *
 * Accepts one or more cadastral numbers (comma/newline separated).
 */
export async function POST(req: Request) {
  try {
    const body = (await req.json()) as Body;
    const siruta = String(body.siruta ?? "").trim();
    const rawSearch = (body.search ?? "").trim();

    if (!siruta || !/^\d+$/.test(siruta)) {
      return NextResponse.json(
        { error: "SIRUTA obligatoriu" },
        { status: 400 },
      );
    }
    if (!rawSearch) {
      return NextResponse.json(
        { error: "Număr cadastral obligatoriu" },
        { status: 400 },
      );
    }

    // Parse multiple cadastral numbers (comma, newline, space separated)
    const cadNumbers = rawSearch
      .split(/[\s,;\n]+/)
      .map((s) => s.trim())
      .filter(Boolean);

    if (cadNumbers.length === 0) {
      return NextResponse.json(
        { error: "Număr cadastral obligatoriu" },
        { status: 400 },
      );
    }

    // Credential chain: body > session > env
    const session = getSessionCredentials();
    const username = String(
      body.username || session?.username || process.env.ETERRA_USERNAME || "",
    ).trim();
    const password = String(
      body.password || session?.password || process.env.ETERRA_PASSWORD || "",
    ).trim();

    if (!username || !password) {
      return NextResponse.json(
        { error: "Conectează-te la eTerra mai întâi." },
        { status: 401 },
      );
    }

    const client = await EterraClient.create(username, password);

    // Workspace resolution chain: body → DB → ArcGIS layer query
    let workspaceId = body.workspacePk ?? null;
    if (!workspaceId || !Number.isFinite(workspaceId)) {
      try {
        const dbUat = await prisma.gisUat.findUnique({
          where: { siruta },
          select: { workspacePk: true },
        });
        if (dbUat?.workspacePk) workspaceId = dbUat.workspacePk;
      } catch {
        // DB lookup failed
      }
    }
    if (!workspaceId || !Number.isFinite(workspaceId)) {
      workspaceId = await resolveWorkspace(client, siruta);
    }
    if (!workspaceId) {
      return NextResponse.json(
        { error: "Nu s-a putut determina județul pentru UAT-ul selectat." },
        { status: 400 },
      );
    }
    console.log("[search] siruta:", siruta, "workspaceId:", workspaceId);

    const results: ParcelDetail[] = [];

    for (const cadNr of cadNumbers) {
      try {
        // 1. Search immovable by identifier (exact match)
        const immResponse = await client.searchImmovableByIdentifier(
          workspaceId,
          siruta,
          cadNr,
        );

        const items = immResponse?.content ?? [];
        if (items.length === 0) {
          // No result — add placeholder so user knows it wasn't found
          results.push({
            nrCad: cadNr,
            nrCF: "",
            nrCFVechi: "",
            nrTopo: "",
            intravilan: "",
            categorieFolosinta: "",
            adresa: "",
            proprietari: "",
            proprietariActuali: "",
            proprietariVechi: "",
            suprafata: null,
            solicitant: "",
            immovablePk: "",
          });
          continue;
        }

        for (const item of items) {
          const immPk = item?.immovablePk;
          const immPkStr = String(immPk ?? "");

          // Basic data from immovable list
          let nrCF = String(item?.paperLbNo ?? item?.paperCadNo ?? "");
          let nrCFVechi = "";
          let nrTopo = String(item?.topNo ?? item?.paperCadNo ?? "");
          let addressText = formatAddress(item);
          let proprietariActuali: string[] = [];
          let proprietariVechi: string[] = [];
          let solicitant = "";
          let intravilan = "";
          let categorie = "";
          let suprafata: number | null = null;

          // Try multiple area fields
          const areaStr = item?.area ?? item?.areaValue ?? item?.areaMP ?? item?.suprafata;
          if (areaStr != null) {
            const parsed = Number(areaStr);
            if (Number.isFinite(parsed) && parsed > 0) suprafata = parsed;
          }
          // Log raw item keys once for debugging (first item only)
          if (results.length === 0) {
            console.log("[search] immovable item keys:", Object.keys(item ?? {}));
            console.log("[search] area fields:", { area: item?.area, areaValue: item?.areaValue, areaMP: item?.areaMP });
          }

          // 2. Fetch documentation data (CF, proprietari)
          if (immPk) {
            try {
              const docResponse = await client.fetchDocumentationData(
                workspaceId,
                [immPk],
              );

              // Extract doc details
              const docImm = (docResponse?.immovables ?? []).find(
                // eslint-disable-next-line @typescript-eslint/no-explicit-any
                (d: any) => String(d?.immovablePk) === immPkStr,
              );
              if (docImm) {
                if (docImm.landbookIE) {
                  const oldCF = nrCF;
                  nrCF = String(docImm.landbookIE);
                  if (oldCF && oldCF !== nrCF) nrCFVechi = oldCF;
                }
                if (docImm.topNo) nrTopo = String(docImm.topNo);
                if (docImm.area != null) {
                  const docArea = Number(docImm.area);
                  if (Number.isFinite(docArea)) suprafata = docArea;
                }
              }

              // Extract owners from partTwoRegs — separate active vs cancelled
              const activeOwners: string[] = [];
              const cancelledOwners: string[] = [];
              // eslint-disable-next-line @typescript-eslint/no-explicit-any
              const regs = docResponse?.partTwoRegs ?? [];
              if (regs.length > 0) {
                console.log("[search] partTwoRegs[0] keys:", Object.keys(regs[0]));
                console.log("[search] partTwoRegs sample:", JSON.stringify(regs[0]).slice(0, 500));
              }
              // eslint-disable-next-line @typescript-eslint/no-explicit-any
              regs.forEach((reg: any) => {
                if (
                  String(reg?.nodeType ?? "").toUpperCase() === "P" &&
                  reg?.nodeName
                ) {
                  const name = String(reg.nodeName).trim();
                  if (!name) return;
                  // Check if this entry is cancelled/radiated
                  const isCancelled =
                    reg?.cancelled === true ||
                    reg?.isActive === false ||
                    reg?.radiat === true ||
                    String(reg?.status ?? "").toUpperCase() === "RADIAT" ||
                    String(reg?.status ?? "").toUpperCase() === "CANCELLED" ||
                    reg?.radiationDate != null;
                  if (isCancelled) {
                    cancelledOwners.push(name);
                  } else {
                    activeOwners.push(name);
                  }
                }
              });
              proprietariActuali = Array.from(new Set(activeOwners));
              proprietariVechi = Array.from(new Set(cancelledOwners))
                .filter((n) => !proprietariActuali.includes(n));
            } catch {
              // Documentation fetch failed — continue with basic data
            }
          }

          // 3. Fetch application data (solicitant, folosință, intravilan)
          if (immPk) {
            try {
              const apps = await client.fetchImmAppsByImmovable(
                immPk,
                workspaceId,
              );
              // Pick most recent application
              const chosen =
                // eslint-disable-next-line @typescript-eslint/no-explicit-any
                (apps ?? [])
                  .filter((a: any) => a?.dataCerere)
                  // eslint-disable-next-line @typescript-eslint/no-explicit-any
                  .sort(
                    (a: any, b: any) =>
                      (b.dataCerere ?? 0) - (a.dataCerere ?? 0),
                  )[0] ?? apps?.[0];

              if (chosen) {
                solicitant = String(chosen.solicitant ?? chosen.deponent ?? "");
                const appId = chosen.applicationId;
                if (appId) {
                  try {
                    const fol = await client.fetchParcelFolosinte(
                      workspaceId,
                      immPk,
                      appId,
                    );
                    intravilan = normalizeIntravilan(
                      // eslint-disable-next-line @typescript-eslint/no-explicit-any
                      (fol ?? []).map((f: any) => f?.intravilan ?? ""),
                    );
                    categorie = formatCategories(fol ?? []);
                  } catch {
                    // folosinta fetch failed
                  }
                }
              }
            } catch {
              // immApps fetch failed
            }
          }

          const allOwners = [...proprietariActuali, ...proprietariVechi];
          results.push({
            nrCad: String(item?.identifierDetails ?? cadNr),
            nrCF,
            nrCFVechi,
            nrTopo,
            intravilan,
            categorieFolosinta: categorie,
            adresa: addressText,
            proprietari: allOwners.join("; "),
            proprietariActuali: proprietariActuali.join("; "),
            proprietariVechi: proprietariVechi.join("; "),
            suprafata,
            solicitant,
            immovablePk: immPkStr,
          });
        }
      } catch {
        // Error for this particular cadNr — add placeholder
        results.push({
          nrCad: cadNr,
          nrCF: "",
          nrCFVechi: "",
          nrTopo: "",
          intravilan: "",
          categorieFolosinta: "",
          adresa: "",
          proprietari: "",
          proprietariActuali: "",
          proprietariVechi: "",
          suprafata: null,
          solicitant: "",
          immovablePk: "",
        });
      }
    }

    return NextResponse.json({
      results,
      total: results.length,
      source: "eterra-app",
    });
  } catch (error) {
    const message = error instanceof Error ? error.message : "Eroare server";
    return NextResponse.json({ error: message }, { status: 500 });
  }
}